Enhancement of ATC in a deregulated power system by optimal location of multi-facts devices

Increased electric power demand in a deregulated power system causes transmission lines to be driven beyond their transfer limits and causes violation of their limits which results to over load of lines. Available Transfer Capability (ATC) of a transmission system is a measure of unutilized capability of a system at a given time. The computation of ATC is very important to operate the transmission system more secure and the paper focuses on increasing the power transfer capability using FACTS devices like TCSC (Thyristor Controlled Series Capacitor), TCPAR (Thyristor Controlled Phase Angle Regulator), SVC (Static Var Compensator). These FACTS devices are optimally placed on transmission system using Sensitivity approach method. The proposed method is to enhance the ATC on Modified IEEE-14 bus system Using Power World Simulator 17software.